Backflow Prevention
Backflow prevention devices keep contaminated water from flowing back into potable water supplies. They're required by code wherever cross-connections exist, such as boiler feeds, irrigation, fire systems and process water.
Backflow Device Types
- Reduced pressure zone (RPZ) assemblies – high-hazard protection
- Double check valve assemblies – low-hazard protection
- Pressure vacuum breakers – irrigation
- Atmospheric vacuum breakers – simple point-of-use
- Repair kits and test kits – maintenance and annual testing
Choosing a Device
The hazard level and local code determine the device. Size for flow and pressure loss, and plan for annual testing access.
Centro supplies backflow prevention devices and repair kits.
Related categories: Process Equipment | Industrial Desiccant Dehumidifiers | Heat Exchanger Applications | Thermal Fluid Heater Systems | Pumps
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Engineered by Apollo, the 4ANLF70CBPE is a Kit, Byp Type-1. Typical applications span commercial mechanical systems, marine, and plumbing environments. Backed by Apollo's commitment to quality, the 4ANLF70CBPE is built to perform under real-world conditions. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF70CBPG is a Kit, Byp Type-1. This product serves professionals across commercial mechanical systems, fire protection, and marine sectors. Backed by Apollo's commitment to quality, the 4ANLF70CBPG is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF70EBPC from Apollo is a Kit, Byp Type-1. This product serves professionals across plumbing, commercial mechanical systems, and industrial processing sectors. Backed by Apollo's commitment to quality, the 4ANLF70EBPC is built to perform under real-world conditions. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF70EBPE is a Kit, Byp Type-1. Typical applications span fire protection, HVAC, and plumbing environments. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF70EBPG is a Kit, Byp Type-1. It is commonly found in plumbing, oil and gas, and fire protection applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A205A2FLL is an RP Backflow Preventer 1". Typical applications span industrial processing, plumbing, and commercial mechanical systems environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A215A2F from Apollo is an RP Backflow Preventer 1". This product serves professionals across fire protection, marine, and plumbing sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A207A2FLL from Apollo is an RP Backflow Preventer. Typical applications span industrial processing, plumbing, and marine environments. The 4A207A2FLL reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A213A2FLL from Apollo is an RP Backflow Preventer 1/2". This product serves professionals across fire protection, HVAC, and plumbing sectors. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable FM and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A213A2F from Apollo is an RP Backflow Preventer 1/2". This product serves professionals across fire protection, HVAC, and plumbing sectors. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A218A2FLL is an RP Backflow Preventer 2". Typical applications span HVAC, fire protection, and industrial processing environments. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A214A2FLL is an RP Backflow Preventer 3/4". This product serves professionals across fire protection, marine, and commercial mechanical systems sectors. Backed by Apollo's commitment to quality, the 4A214A2FLL is built to perform under real-world conditions. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A214A2F from Apollo is an RP Backflow Preventer 3/4". This product serves professionals across fire protection, commercial mechanical systems, and marine sectors. The 4A214A2F reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A205A2F is a Bronze RP Backflow Preventer 1". Typical applications span industrial processing, marine, and commercial mechanical systems environments. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A215A4FLL from Apollo is a Bronze RP Backflow Preventer 1". This product serves professionals across plumbing, fire protection, and oil and gas sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A205A4F from Apollo is a Bronze RP Backflow Preventer 1". This product serves professionals across commercial mechanical systems, industrial processing, and marine sectors. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A215A4F is a Bronze RP Backflow Preventer 1". Typical applications span oil and gas, HVAC, and fire protection environments. Backed by Apollo's commitment to quality, the 4A215A4F is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A207A2 from Apollo is a Bronze RP Backflow Preventer. This product serves professionals across oil and gas, commercial mechanical systems, and marine sectors. The 4A207A2 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A207A2F is a Bronze RP Backflow Preventer. It is commonly found in HVAC, commercial mechanical systems, and oil and gas applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A217A2F from Apollo is a Bronze RP Backflow Preventer. It is commonly found in fire protection, oil and gas, and commercial mechanical systems applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A206A4F from Apollo is a Bronze RP Backflow Preventer. It is commonly found in plumbing, industrial processing, and fire protection applications. The 4A206A4F reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A206A2 from Apollo is a Bronze RP Backflow Preventer. Typical applications span fire protection, marine, and plumbing environments. Backed by Apollo's commitment to quality, the 4A206A2 is built to perform under real-world conditions. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A206A2F is a Bronze RP Backflow Preventer. Typical applications span plumbing, HVAC, and oil and gas environments. The 4A206A2F reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A203A2F is a Bronze RP Backflow Preventer 1/2". It is commonly found in HVAC, oil and gas, and industrial processing applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF70CBPE is a Kit, Byp Type-1. Typical applications span commercial mechanical systems, marine, and plumbing environments. Backed by Apollo's commitment to quality, the 4ANLF70CBPE is built to perform under real-world conditions. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF70CBPG is a Kit, Byp Type-1. This product serves professionals across commercial mechanical systems, fire protection, and marine sectors. Backed by Apollo's commitment to quality, the 4ANLF70CBPG is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF70EBPC from Apollo is a Kit, Byp Type-1. This product serves professionals across plumbing, commercial mechanical systems, and industrial processing sectors. Backed by Apollo's commitment to quality, the 4ANLF70EBPC is built to perform under real-world conditions. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF70EBPE is a Kit, Byp Type-1. Typical applications span fire protection, HVAC, and plumbing environments. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF70EBPG is a Kit, Byp Type-1. It is commonly found in plumbing, oil and gas, and fire protection applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A205A2FLL is an RP Backflow Preventer 1". Typical applications span industrial processing, plumbing, and commercial mechanical systems environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A215A2F from Apollo is an RP Backflow Preventer 1". This product serves professionals across fire protection, marine, and plumbing sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A207A2FLL from Apollo is an RP Backflow Preventer. Typical applications span industrial processing, plumbing, and marine environments. The 4A207A2FLL reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A213A2FLL from Apollo is an RP Backflow Preventer 1/2". This product serves professionals across fire protection, HVAC, and plumbing sectors. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable FM and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A213A2F from Apollo is an RP Backflow Preventer 1/2". This product serves professionals across fire protection, HVAC, and plumbing sectors. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A218A2FLL is an RP Backflow Preventer 2". Typical applications span HVAC, fire protection, and industrial processing environments. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A214A2FLL is an RP Backflow Preventer 3/4". This product serves professionals across fire protection, marine, and commercial mechanical systems sectors. Backed by Apollo's commitment to quality, the 4A214A2FLL is built to perform under real-world conditions. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A214A2F from Apollo is an RP Backflow Preventer 3/4". This product serves professionals across fire protection, commercial mechanical systems, and marine sectors. The 4A214A2F reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A205A2F is a Bronze RP Backflow Preventer 1". Typical applications span industrial processing, marine, and commercial mechanical systems environments. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A215A4FLL from Apollo is a Bronze RP Backflow Preventer 1". This product serves professionals across plumbing, fire protection, and oil and gas sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A205A4F from Apollo is a Bronze RP Backflow Preventer 1". This product serves professionals across commercial mechanical systems, industrial processing, and marine sectors. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A215A4F is a Bronze RP Backflow Preventer 1". Typical applications span oil and gas, HVAC, and fire protection environments. Backed by Apollo's commitment to quality, the 4A215A4F is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A207A2 from Apollo is a Bronze RP Backflow Preventer. This product serves professionals across oil and gas, commercial mechanical systems, and marine sectors. The 4A207A2 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A207A2F is a Bronze RP Backflow Preventer. It is commonly found in HVAC, commercial mechanical systems, and oil and gas applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A217A2F from Apollo is a Bronze RP Backflow Preventer. It is commonly found in fire protection, oil and gas, and commercial mechanical systems applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A206A4F from Apollo is a Bronze RP Backflow Preventer. It is commonly found in plumbing, industrial processing, and fire protection applications. The 4A206A4F reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A206A2 from Apollo is a Bronze RP Backflow Preventer. Typical applications span fire protection, marine, and plumbing environments. Backed by Apollo's commitment to quality, the 4A206A2 is built to perform under real-world conditions. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A206A2F is a Bronze RP Backflow Preventer. Typical applications span plumbing, HVAC, and oil and gas environments. The 4A206A2F reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A203A2F is a Bronze RP Backflow Preventer 1/2". It is commonly found in HVAC, oil and gas, and industrial processing applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times